EP1210204A4 - Silver brazing flux and method of making - Google Patents
Silver brazing flux and method of makingInfo
- Publication number
- EP1210204A4 EP1210204A4 EP00946855A EP00946855A EP1210204A4 EP 1210204 A4 EP1210204 A4 EP 1210204A4 EP 00946855 A EP00946855 A EP 00946855A EP 00946855 A EP00946855 A EP 00946855A EP 1210204 A4 EP1210204 A4 EP 1210204A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- paste
- approximately
- potassium
- weight
- flux
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3606—Borates or B-oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0227—Rods, wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0244—Powders, particles or spheres; Preforms made therefrom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3006—Ag as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
Definitions
- the present invention relates to the field of silver brazing and, in particular, to a silver brazing flux that is non-corrosive and non-hygroscopic in nature.
- the present invention is a silver brazing flux that is non-corrosive and non- hygroscopic in nature, and a method of making this flux.
- the flux includes the following compounds in the following percentages by weight: Table 1 : Composition of Basic Flux Compound
- the flux is combined with de-ionized water, or other suitable binder materials, to form a flux paste.
- the flux is mixed and dried into a powder and dispensed within a sheath of silver based filler material, using the process described in U.S. Patent No. 5,781,846, which is incorporated herein by reference, to form a flux cored brazing composition.
- the preferred flux includes the same compounds in the following percentages by weight:
- the basic method of making the flux includes the following steps:
- the resulting flux powder is non-corrosive and non-hygroscopic, and is readily adapted for suspension within a paste or disposition within a sheath of brazing alloy to form a flux cored brazing composition.
- the present invention is a silver brazing flux that is non-corrosive and non- hygroscopic in nature and a method of making the flux.
- the flux is a mixture of potassium fluoroborate, boric acid, potassium bifluoride, potassium tetraborate and potassium carbonate.
- the resulting flux provides excellent surface preparation characteristics and is both non-corrosive and non-hygroscopic.
- the flux is combined with de-ionized water, or other suitable binder materials, to form a flux paste.
- the flux paste is applied to the faying surfaces prior to the application of heat, and is subsequently heated until it flows and wicks across the faying surfaces, effectively preparing the surfaces for joining.
- a solid wire of a silver based brazing composition is brought into contact with the heated surfaces, causing the brazing composition to flow across the surfaces and, once cooled, to effectively join the surfaces together.
- the flux is mixed and dried into a powder and dispensed within a sheath of silver based filler material, to form a flux cored brazing composition.
- the faying surfaces are heated and the flux cored brazing composition is brought into contact with the heated surfaces, causing the flux to melt and flow and subsequently causing the brazing composition to melt and flow.
- AWS American Welding Society
- the preferred flux includes the following compounds in the associated percentages by weight:
- the preferred method includes the following steps:
- the stainless steel pan into a pre-heated oven at approximately 560 degrees Fahrenheit for a period of four hours such that substantially all de- ionized water is dried from the mixture. • Removing the dried flux, milling to a powder and screening to a desired particle size.
- the resulting flux powder is non-corrosive and non- hygroscopic, and is readily said potassium fluoroborate is approximately 26%) by weight, boric acid is approximately 26% by weight, potassium bifluoride is approximately 24% by weight, potassium tetraborate is approximately 20% by weight, and potassium tetraborate is approximately 3.5% by weight.
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Nonmetallic Welding Materials (AREA)
- Ceramic Products (AREA)
- Conductive Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14116599P | 1999-06-25 | 1999-06-25 | |
US141165P | 1999-06-25 | ||
PCT/US2000/017468 WO2001000366A1 (en) | 1999-06-25 | 2000-06-24 | Silver brazing flux and method of making |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1210204A1 EP1210204A1 (en) | 2002-06-05 |
EP1210204A4 true EP1210204A4 (en) | 2004-10-27 |
EP1210204B1 EP1210204B1 (en) | 2006-02-15 |
Family
ID=22494471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00946855A Expired - Lifetime EP1210204B1 (en) | 1999-06-25 | 2000-06-24 | Silver brazing flux and method of making |
Country Status (6)
Country | Link |
---|---|
US (1) | US6277210B1 (en) |
EP (1) | EP1210204B1 (en) |
AT (1) | ATE317739T1 (en) |
AU (1) | AU6055100A (en) |
DE (1) | DE60026032D1 (en) |
WO (1) | WO2001000366A1 (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6830632B1 (en) | 2002-07-24 | 2004-12-14 | Lucas Milhaupt, Inc. | Flux cored preforms for brazing |
EP1945397B1 (en) * | 2005-11-10 | 2016-03-02 | Lucas-Milhaupt, Inc. | Brazing material with continuous length layer of elastomer containing a flux |
CN101489713B (en) * | 2006-05-25 | 2012-11-28 | 贝尔曼-梅尔科发展有限责任公司 | Filler metal with flux for brazing and soldering and method of making and using same |
US8274014B2 (en) | 2006-05-25 | 2012-09-25 | Bellman-Melcor Development, Llc | Filler metal with flux for brazing and soldering and method of making and using same |
EP2091686B1 (en) * | 2006-12-11 | 2016-06-15 | Lucas-Milhaupt, Inc. | Low and non-silver filler metals and alloys and corresponding joinder systems and methods |
US20080245845A1 (en) * | 2007-04-04 | 2008-10-09 | Lawrence Bernard Kool | Brazing formulation and method of making the same |
WO2008148088A1 (en) * | 2007-05-25 | 2008-12-04 | Lucas Milhaupt, Inc. | Brazing material |
US20090200363A1 (en) * | 2008-02-13 | 2009-08-13 | Trane International Inc. | Braze Ring |
US20110031301A1 (en) * | 2009-08-06 | 2011-02-10 | Segletes David S | Joining of Electrical Generator Components |
US9157134B2 (en) | 2009-10-26 | 2015-10-13 | Lucas-Milhaupt, Inc. | Low silver, low nickel brazing material |
US9700964B2 (en) * | 2013-03-15 | 2017-07-11 | Lincoln Global, Inc. | Boric acid free flux |
CN105032727A (en) | 2013-05-30 | 2015-11-11 | 卢卡斯米尔霍特公司 | Process for flux coating braze preforms and discrete parts |
US9731383B2 (en) | 2014-07-09 | 2017-08-15 | Bellman-Melcor Development, Llc | Filler metal with flux for brazing and soldering and method of using same |
US10744601B2 (en) | 2015-08-07 | 2020-08-18 | Bellman-Melcor Development, Llc | Bonded brazing ring system and method for adhering a brazing ring to a tube |
CN110744222B (en) * | 2019-10-18 | 2021-08-03 | 郑州机械研究所有限公司 | Brazing flux not prone to moisture absorption and preparation method thereof |
CN110936064A (en) * | 2019-12-17 | 2020-03-31 | 中机智能装备创新研究院(宁波)有限公司 | Flux-cored silver brazing filler metal |
CN113878264B (en) * | 2021-11-10 | 2023-01-31 | 湖南盛华源材料科技有限公司 | Brazing flux paste for hard alloy-tool steel cutter and preparation method thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3033713A (en) * | 1960-04-20 | 1962-05-08 | Air Reduction | Improved-stabilized brazing fluxes and binders |
US3175932A (en) * | 1963-03-25 | 1965-03-30 | Air Reduction | Flux composition |
JPS5686698A (en) * | 1979-12-14 | 1981-07-14 | Mitsubishi Metal Corp | Flux for silver soldering of metal carbide group ultrahard alloy |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US490888A (en) * | 1893-01-31 | X xx xx | ||
US4482607A (en) * | 1982-09-23 | 1984-11-13 | Amax Inc. | Method for coating magnesium granules with fluoride-containing flux |
US5781846A (en) * | 1993-02-25 | 1998-07-14 | Jossick; James L. | Flux cored brazing composition |
DE19651220A1 (en) * | 1996-12-10 | 1998-06-18 | Degussa | Flux-coated solder moldings and process for their production |
-
2000
- 2000-06-24 US US09/603,317 patent/US6277210B1/en not_active Expired - Fee Related
- 2000-06-24 EP EP00946855A patent/EP1210204B1/en not_active Expired - Lifetime
- 2000-06-24 AU AU60551/00A patent/AU6055100A/en not_active Abandoned
- 2000-06-24 DE DE60026032T patent/DE60026032D1/en not_active Expired - Lifetime
- 2000-06-24 AT AT00946855T patent/ATE317739T1/en not_active IP Right Cessation
- 2000-06-24 WO PCT/US2000/017468 patent/WO2001000366A1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3033713A (en) * | 1960-04-20 | 1962-05-08 | Air Reduction | Improved-stabilized brazing fluxes and binders |
US3175932A (en) * | 1963-03-25 | 1965-03-30 | Air Reduction | Flux composition |
JPS5686698A (en) * | 1979-12-14 | 1981-07-14 | Mitsubishi Metal Corp | Flux for silver soldering of metal carbide group ultrahard alloy |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 0051, no. 58 (M - 091) 12 October 1981 (1981-10-12) * |
Also Published As
Publication number | Publication date |
---|---|
DE60026032D1 (en) | 2006-04-20 |
EP1210204B1 (en) | 2006-02-15 |
US6277210B1 (en) | 2001-08-21 |
ATE317739T1 (en) | 2006-03-15 |
WO2001000366A1 (en) | 2001-01-04 |
AU6055100A (en) | 2001-01-31 |
EP1210204A1 (en) | 2002-06-05 |
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